Welcome to Temescal Park, one of the three original East Bay Regional Parks, where you can walk, jog, pedal, fish, or swim. Park hours are 5 am to 10 pm. Sometimes there is an entry fee (usually weekends in nice weather) but you can park on the street and walk in for free.
The container has room for small swag or trackables. Coordinates were averaged from readings taken over several days but are jumpy due to tree cover, so use the hint. BYOP and use stealth. Have fun!